Dell 5110cn Color Laser Printer - Manual (Page 373)

Feed paper from tray 4 (optional 1000-sheet module).
A4
Feed paper from the tray loaded with A4 (210 x 297 mm).
A5
Feed paper from the tray loaded with A5 (148 x 210 mm).
B5
Feed paper from the tray loaded with B5 (182 x 257 mm).
LT
Feed paper from the tray loaded with Letter (8.5 x 11 inches).
FL
Feed paper from the tray loaded with Folio (8.5 x 13 inches).
LG
Feed paper from the tray loaded with Legal (8.5 x 14 inches).
EX
Feed paper from the tray loaded with Executive (7.25 x 10.5 inches).
MO
Feed paper from the tray loaded with Monarch (3.875 x 7.5 inches).
COM10
Feed paper from the tray loaded with Envelope #10 (4.125 x 9.5 inches).
DL
Feed paper from the tray loaded with DL (110 x 220 mm).
C5
Feed paper from the tray loaded with C5 (162 x 229 mm).
MxNmm
Feed paper from the tray loaded with MxNmm defined by users.
Possible range specified:
Width: 88.9 to 220 mm
Length: 139.7 to 355.6 mm
MxNin
Feed paper from the tray loaded with MxNinches defined by users.
Possible range specified:
Width: 3.50 to 8.50 inches